Turn-over door



Jan. 16, 1940.

A. T. PRESCOTT TURN-OVER DOOR 3 Sheets-Sheet 1 RC Y 05 E Te N 6 Nr/R f E o w WW A 4 7 r WW 4% TURN-OVER DOOR 3 Sheets-Sheet 2 Filed June 12, 1957 d Rm m me fim N/ R 5 m PM My JWB Maw w W.

.M C w n W Jan. 16, 1940.

'A. T. PRESCOTT TURN-OVER DOOR Filed June 12, 1937 s Sheets-Sheet 5 283 zzzzm INVENTOR /4r/%af 77f 5 /f ATTORNEYSA/ Patented Jan. 16, 1940 al Iii it it WW1 TURN-OVER DOOR Arthur T. Prescott, East Orange, N. J., assignor A to J. Edward Ogden Company, East Orange,

N. J., a corporation of New Jersey I Application June 12,1937, Serial No. 147,880

7 Claims.

This invention relates to improvements in turnover doors, and especiallyyto sectional doors of the type which are used for industrial purposes, which usually are of large size. Its object is to improve upon doors of this character by constructing them in such a manner that they occupy less useful space than heretofore has been thought possible.

Doors are available which are'divided horizontally into sections, the upper section abutting against the jambs and the lower section sliding over it in a plane still farther inside of the building structure to open the lower part of the doorway and then the sections swinging inwardly to a substantially horizontal position near the level of the lintel. i

One of the advantages of doors of this type is the conservation of space. Because of their large size and the wind pressures to which they are Subjected, the panels have to be of considerable thickness. Consequently, the lower panel when closed occupies a position equal to at least its width and the combined thickness of the panels, and this space is wasted. The principal object of this invention is to overcome this difficulty and to provide a construction which makes it possible to position the door sections between the jambs, so that they occupy no useful space adjacent the dooropenings, which in large industrial or warehouse buildings is of considerable value.

These doors are used principally on piers where the cargo is piled within two or three inches from the doors so that when the door sections are raised this cargo can be loaded directly onto a r ship. The space saved by these doors is, therefore, the most valuable storage space on the pier.

To this end, my invention relates to a novel construction and arrangement of the supporting and actuating parts of a door structure which is illustrated in the accompanying drawings and which will be described in the following specification.

Referring to the drawings,

Fig. 1 is a sectional elevation of a door which is made according to and embodies this invention, with the open position of its sections indicated by broken lines;

Fig. 2 is a sectional plan view of the structure shown in Fig. 1, the section being taken on the line 2--2 of the latter figure;

Fig. 3 is a sectional plan view on a larger scale of some of the parts shown in Fig. 2;

Fig. 4 is a sectional elevation on an enlarged scale of the upper part of the structure illustrating its operation;

Fig. 5 is an elevation partly in section of a latch mechanism for holding the upper part of the upper section closed;

Fig. 6 is a sectional elevation of some of the parts showing in detail a device for holding the lower part of the upper sec 0 0 Fig. '7 is an elevation illustrating another structural detail -the support for the upper end of one of the links.

Fig. 8 is a sectional elevation of the lintel and a modified form of the upp r edge of e pp r section; and

Figs. 9, l0 and 11 are sectional plan views of one of the jambs and of modifications of associated parts of upper and lower door sections.

Like characters of reference d si n rresponding parts on each of t fi u e Zil designates the door la bs. These are built up of structural steel in the usual manner and counterweights 21 for the 6.001 Sect ons run With in them (Figs. 1, 2 and 3). 22 is the door lintel. 3|] is the upper door section and M is an angle iron which runs across the top of this 1 1 tion and forms its upper e- When the door is closed one of the legs of this ang e iron abuts against a leg of another angle iron 23 afiixed to the lintel.

The vertical edges of t D1 100 Sect ons comprise fiat plates 3?. which extend inwardly beyond the inner edge 33 Of t pp eC Qn and are bent at right angles to form portions B ll which abut against surfaces 24 0f th l n the door is closed, and thence wa ly to form p tions 35 which fit within the fl n es of an le irons 25 on the jamb. Th edge 3 is f rm d by the inner web of a channel iron which forms'the lower edge of the upper section. Rollers til, which run on the other fla es of ang irons are pivotally supported on these portions of the sides of the upper secti AS t pper sec' tion is lowered into its closed position. t ese rollers run into brackets 0 t l bs 6) which hold the lower end of the upper section, and the upper end of the lower section, (which is engaged with the upper secti as Will be p in d out), tightly closed.

The upper section is supp d y links 36 which are supported by brack ts 3'3 affixed to the jambs 2|] by a pin and 101; onnection and to the plates 32 by pivots 38 intermediate the top and bottom of the upper section and located inside of the points of connection of the links with the brackets 31. This arrangemen giv s e pp section a tendency to swing outwardly and to bring its angle iron 3| into contact with the jamb angle iron 23 when the door is closed.

The upper edge of the upper section is maintained in this closed position by the latch mechanism which is illustrated in Fig. 5-. Brackets having flanges 4| extending upwardly inside of the lintel, are secured to opposite ends of the angle iron 3!. These flanges are engaged by latches 42 pivoted at 43 at stationary points. The latches move to horizontal positions by gravity, assisted by springs 44. and their downward movement is limited by stops 45. As the door swings shut the flanges li ride over inclined projections 46 of the latches and raise them until the flanges pass the shoulders ll. Then the latches drop and hold the upper part of the upper section closed. The manner in which the latches are released will be described later.

The lower door section is designated by the reference numeral 50. Its upper edge is formed by an inverted channel iron 5i, to which is so cured an angle iron 52 which extends outwardly into position to overlap the inner edge of the l wer e f e upp r section when the door is closed, (588 1). At the lower corners of the lower section are brackets 53 to which the hoistins chains or c l s 54 are attached. These run p to hoisting mechanism at the top of the doorway and to the counterweights 2!. These parts are not described specifically as they are well knOWn and f rm 110 p t; of the present invention.

Flat plates 55 extend outwardly from the vert c edges 0 the wer section and are arranged to slide up over the parts 34 of the upper section into grooves formed between these parts 36 and angle irons 56 secured to them.

Brackets 51 near the upper corners of the lower section carry rollers 58 which run through an inclined channel 59 when the door is opened and closed, (see Fig. 4)

Other brackets on the upper edge of the lower section carry plates 6| in alinement with the latches 42. These plates are pivoted to the brackets at 67. and are pressed into a vertical DOSitiOn y Springs When the door is opened and the lower section reaches the position indicated in Fig. 5, the plates 6| lift the latches and permit the upper edges of both sections to swing inwardly.

Before describing the modifications shown in Figs, 8-11, I will describe the operation of the apparatus. When the'lower section is raised, its plates slide in the groove between the portions 34 of plates 52 and the angle irons 56 on the upp section which guide it into overlying position. When it reaches the position shown in Fig. 5 the latches 42 are released and the uppe dg s Of the sections are free to swing inwardly. As both sections are then under the lintel it is necessary to provide a mechanism to move them laterally, Thi i shown in Fig. 4.

The channel iron 5! rises vertically until rollers 58 reach the nclined channel 59. When these rollers are deflected to the position shown at 58A, the vertical web of angle iron 3| will sections are free to be moved to the full open,

position shown in broken lines in Fig. 1. the rollers 58 rest on brackets 65.

In c the operation is reversed. As the pper door sect on approaches its closed posi- Then tion, rollers 39 on the bottom of this door section come into engagement with brackets 39A. Thereafter, or coincidentally, the upper edges of both door sections are forced outwardly by the engagement of roller 58 with channel 59 until angle iron 3i abuts angle iron 23, at which time latch 22 engages flange 4|. During the closing operation plate (ii is free to swing inwardly to pass the latch. Continuance of the closing operation permits the lower door section 5 2 to pass downward into the grooved guides 56A attached to the jarnbs opposite this portion of the doorway. When the door is fully closed the upper end of plate 55 remains in engagement with the groove carried by the upper door section formed by members 34 and 56.

At the upper corners of the upper door seotion are lugs 35A having curved slanted faces which are adapted to contact with the link brackets 3? to centralize the door when closing.

In Fig. 8 the top of the upper section 30 is formed or a plate 19 which has a downwardly projecting flange ll. at its outer edge and an upwardly projecting flange 12 at its inner edge adapted to abut against the inner surface of Y the lintel. Plates HA are aflixed to the flange ii for engagement with the latches.

Fig 9 illustrates a modification of the interconnecting parts of the door sections and the iamb. 39 is a plate affixed to the vertical edge It of the upper door section 313. A flange 8! at its inner edge overlaps the surface 24 of the jamb and another flange 82 fits a channel formed by the inner surface of the lower door section and an angular strip 83 affixed to the latter.

In Fig. 10 a plate 85 is bent outwardly to form a portion 35 which overlaps the jamb surface 2d and then inwardly at 8! and back again, as at 83, to form a channel which slidably receives a strip 89 afiixed to the lower section.

In Fig. 11, 90 is a channel iron which forms a vertical edge of the upper section. One web ill of an angle iron is affixed to this channel iron. It extends outwardly to overlap the jambv surface 26. A channel is formed between this web ill and an angle iron 52 which is aflixed to the other web 53 of the first mentioned angle iron, to slidably receive a web 94 of an angle iron affixed to the vertical edge of the lower door section. Although this construction is quite simple it does not attain the full advantage of this invention as only the upper section is fully inset between the jambs.

l have illustrated and described the invention as applied to the link type turn-over doors, but it is obvious that it is equally applicable to other types of .turn-over doors, such as those which are guided in tracks Several modifications have been illustrated and. described to show that structural changes may be made Within the spirit and scope of the invention, and I intend no limitations other than those imposed by the appended claims.

What I claim is:

'l. A pair of door 'ambs and a lintel, an upper door section and a lower door section between andoutside of the inner plane of the jambs, means for raising the lower door section verti cally to overlie the upper section, means actuated by the movement of the lower door section as it approaches the upper end of its vertical travel for moving the upper edges of both sections inwardly to a position to clear the inner plane of the lintel, means for causing further upward movement of the lower door section to move the lower edges of both sections vertically, other means to cause both sections to swing inwardly during said further upward movement of the lower edges of the sections and plates on the door sections overlapping the jambs when said sections are closed.

2. A pair of door jarnbs and a lintel, an upper door section and a lower door section between the jambs and outside of the inner plane of the jambs and the lintel, guides on the upper section to receive the lower section, means for raising the lower section in said guides to overlie the upper section, rollers near the upper edges of the lower section, inclined channels near the lintel for moving the upper edges of both sections inwardly to a position to clear the inner plane of the lintel, means for causing further upward movement of the lower door section to move the lower edges of both sections vertically, other means to cause both sections to swing inwardly during said further upward movement of the lower edges of the sections and plates on the door sections overlapping the jambs.

A pair of door jambs and a lintel, a transverse fiange depending from the lintel, an upper door section and a lower door section between the jamlos and outside of the inner plane of the jamos and the lintel, plates on the edges of the upper section overlapping the inner surfaces of the jambs, a latch to maintain the upper edge of the upper section against the lintel flange, guides on the upper section to receive the lower section, means for raising the lower section in said guides to overlie the upper section, rollers near the upper edges of the lower section, inclined channels near the lintel for moving the upper edges of both sections inwardly to a position to clear the inner plane of thelintel, means for causing further upward movement of the lower door section to move the lower edges of both sections vertically, other means to cause both sections to swing inwardly during said further upward movement of the lower edges of the sections, means on the lower section for releasing the latch, rollers near the lower edges of the upper section, and pockets on the jambs for receiving said rollers when the upper section is closed to hold its plates against the jambs.

4. A pair of door jambs, an upper door section and a lower door section between and outside of the inner plane of the jamlos, means for raising the lower door section vertically to overlie the upper section, means actuated by the movement of the lower door section as it approaches the upper end of its vertical travel for moving the upper edges of both sections inwardly to a position to clear the inner plane of the lintel, means for causing further upward movement of the lower door section to move the lower edges of both sections vertically, other means to cause both sections to swing inwardly during said further upward movement of the lower edges of the sections, and lugs on the upper corners of the upper door section having slanted surfaces for guiding the side edges of the upper door section between the jambs in closing.

5. A pair of door jambs and a lintel, an upper door section and a lower door section between and outside of the inner plane of the jambs, means for raising the lower door section vertically to overlie the upper section, means actuated by the movement of the lower door section as it approaches the upper end of its vertical travel for moving the upper edges of both sections inwardly to a position to clear the inner plane of the lintel, means for causing further upward movement of the lower door section to move the lower edges of both sections vertically, other means to cause both sections to swing inwardly during said fur ther upward movement of the lower edges of the sections, and means for guiding the side edges of the upper door section between the jambs in closing.

, 6. A pair of door jambs and a lintel, an upper door section and a lower door section between and outside of the inner plane of the jambs, means for raising the lower door section vertically to overly the upper section, means for causing both sections to swing inwardly to clear the inner plane of the lintel, and plates on at least one of the door sections overlapping the jambs when said sections are closed.

7. A pairof door jambs and a lintel, an upper door section and a lower door section between and outside of the inner plane of the jambs, means for raising the lower door section vertically to overly the upper section, means for causing both sections to swing inwardly to clear the inner plane of the lintel, and means for guiding the side edges of the door sections between the jambs in closing.

ARTHUR T. PRESCOTT. 

